President Donald Trump said he knows “more about the environment than most people” when asked about his skepticism regarding climate change Monday during the G7 summit in Biarritz, France.

“I’ve got more environmental impact statements probably than anybody … more than anybody that has ever been president or vice president or anything even close to president. I think I know more about the environment than most people,” Trump said.

He went on to list the U.S.’s success in the energy industry, saying it is the “No. 1 energy producer in the world.”

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He added the industry is creating “tremendous wealth, and [liquefied natural gas] LNG is being sought over all over Europe and all over the world. … I’m not going to lose that wealth. I’m not going to lose it on dreams — on windmills, which, frankly, aren’t working too well.”

“In a nutshell, I want the cleanest water on Earth. I want the cleanest air on Earth. That’s what we’re doing. And I’m an environmentalist,” he continued. “A lot of people don’t understand that.